Track on and we're done! (Patreon)

My friends, last night I added the tracks, gave them a rather rusty appearance (because this is going to be another abandoned tank) and sprayed the exhaust soot. 

Regarding the loose dirt on the roof, I found one close-up shot showing exactly this, lots of dried grass around the driver's cabin. When I was adding all of this, I had the tank placed in the diorama so the dirt would naturally follow gravity :)